At the foot of the mountains ____ a tower built in the Ming dynasty.
#82160
A
Stood
B
stands
C
standing
D
stand
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Hardly ___________the door when he rushed into the office out of breath.
#84180
A
I opened
B
did I open
C
I had opened
D
had I opened
Come and see me whenever ____.
#81407
A
you are convenient
B
you will be convenient
C
it is convenient to you
D
it was convenient to you
We have been told that under no circumstances_______ the office telephone for personal affairs.
#84637
A
may we use
B
we can use
C
we could use
D
did we use
Small sailboats can easily turn over in the water ________.
#82117
A
if not managed carefully
B
if are not managed carefully
C
unless not managed carefully
D
unless are not managed carefully